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Note 4 - Revenue Recognition - Disaggregation of Net Sales by Product Line (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Apr. 03, 2021	Mar. 28, 2020	Apr. 03, 2021	Mar. 28, 2020
Revenue	$ 138,999	$ 114,859	$ 258,604	$ 212,428
UNITED STATES
Revenue	136,778	114,549	255,115	211,806
Non-US [Member]
Revenue	2,221	310	3,489	622
Welded Wire Reinforcement [Member]
Revenue	81,923	69,355	155,949	131,182
Prestressed Concrete Strand [Member]
Revenue	$ 57,076	$ 45,504	$ 102,655	$ 81,246

X

- Definition

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

+ References

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